Conductor-gripping device



R.B. BENJAMIN. CONDUCTOR GRIPPING 'DEVICE.,

APPLICATION FILED MAY2, I916.

'l mmm; muted A r. 26,1921,

' reac es.

mg had to the accompanying REUBEN B. BENJATEIN, 01E CHICAGO, ILLI NOIS,ASSLENOR TO BENJAMIN ELECTRIO MANUFACTURING COMPANY, OF GHIUAGO,ILLINOIS, A CORPORATION Oli ILLI- NOIS.

CONDUCTOR-GRIEPING DEVICE.

Application filed May a,

To all whom it may concern:

Beit known that LREUBEN B. Bunga- MIN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful durable and efiicient in use.

arable attachment ln-the drawings, in which two embodiments of myinvention are'shown- Figure 1 is a plan view of an attachment plugprovided wlth my improved cord grip;

Flg. 2 is an axial section of Fig. 1;

Fig. 3 is a section substantially on the line 3-3 of Fig; 1, showing thecord grip;

Fig. 4 is a plan view'of the cap for a sep-. plug provided with myimproved cord grip;

Fig. 5'is a side elevation of the cap shown in Fig. 4, parts beingbroken away to show connecting the bases 10- the cord grip; and

Fig. 6 is a bottom plan view of Fig.5. Referring to the drawings indetail, and first to the form shown in Figs. 1, 2 and 3, the attachmentplug here shown comprises an insulating base 10, a shell contact 11,

swiveled onthe base 10, a center contact 12 which also forms a bindingterminal secured on the base 10, and a lower base 13 forming athumbpiece and serving to hold the swivand also forming a' shown in mypatent Serial No. 1,012,970, dated December 26, 1911. The conductor is'led to the binding-terminal 12 through an opening 14 in the insulatingbase 10. For and 13 a tubular sheet metal memberis provided having a Icylindrical portion 15 surrounding the lower end of the base l0,- and av portion 16 threaded into the lower base 13.- For holding the swiveledshell contact 11 in place the sheet metal connecting member is providedwith a shoulder 17 which enga es a corresponding shoulder portion 18 on51c shell contact 11.

conductor. The

Specification of Letters Patent.

Patented A r. as, rear.

1916. Serial No. 94,861.

Y or manipulating the shell contact 11 it is provided with an insulatingthumb ring 19.

contact with the charged part'of the plug the lower part ofthe shellcontact 11 is provided with an insulating band 20. To pre-.

vent possible short circuiting between the conductor and the threadedportion 16 an insulating sleeve 21 is inserted within the threadedportion. grip 14 and holding it in position on the lower base 13 a sheetmetal cap or housing 22 isv provided which is flanged over at' 23 tohold it on the base 13, wardly at 24 beneath the cord prevent wear onthe cord this rounded over as shown at 25 The cord grip 14 is located inthe'chamber formed between the lower base 13 and grip 14. To flange 24is and is flanged in- To prevent persons accidentally coming in .Forhousing thefcord the flange 24 and comprises a pair of arcuate clampingmembers 26 having ears 26 which are secured together by means of screws27. If desired insulating strips 28 may be placed between the clampingmembers 26 and the housing 22 is provided with a pair of openings 29 onopposite sides to permit access to the heads of the screws 27fortightening up the cord grip.

The separable plug cap shown in Figs. 4, 5 and 6 comprises an insulatingbase 30, a pair of contact blades 31 and a pair of binding terminals 31supported on the base'30, a cord grip 32 for holding to take the strainoil the binding terminals, .and a cap or housing 33 for housing the cordgrip 32 and holding it'in position on the base 30. The base 30 has acentral opening 34 through which the conductors are led to the bindlngterminals 31. The housing 33 is secured to the base 30 by being flangedover at the top as indicated at 36. The lower part of the housing 33 isflanged inwardly beneath-the cord grip, as shown at 37 and the innerportion of this flange is rounded over as shown at 38, to prevent wearon thecord. Having thus described my invention what I claim as new andters Patent is -1. An electrical connector comprising a wiringvterminal; and conductor-gripping means comprising metallic grippin members, means for drawing said mem ers to ward and from each other to gripthe conthe conductors, 7

desire to secure'by Let:

duc.tor,- and an insulating lining for said I Wiring terminal; andconductor-gripping conductor-gripping members.

2. An electrical connector comprising a wiring terminal; andconductor-gripping means comprising sheet-metalgripping members movabletoward and from each other to grip the conductor, and insulating membersof sheet-material for lining said sheet-metal gripping members.

3. An electrical connector comprising a means comprising a metal straphaving a curved portion for embracing and grlpplng the conductor, and .astrap of insulating material lining said metal strap.

In witness whereof, I have hereunto subscribed my name.

REUBEN Bi BENJAMIN.

